Seawater carbonate chemistry and phytoplankton productivity between coastal and offshore surface waters in the Taiwan Strait and the South China Sea

Seawater acidification (SA) has been documented to either inhibit, enhance, or result in no effect on marine primary productivity (PP). In order to examine the effects of SA in changing environments, we investigated the influences of SA (a decrease of 0.4 pHtotal units with corresponding CO2 concentrations in the range of 22.0–39.7 µM) on PP through deck-incubation experiments at 101 stations in the Taiwan Strait and the South China Sea, including the continental shelf and slope, as well as the deep-water basin. The daily primary productivities in surface seawater under incident solar radiation ranged from 17–306 µg C/µg Chl a/d, with the responses of PP to SA being region-dependent and the SA-induced changes varying from −88 % (inhibition) to 57 % (enhancement). The SA treatment stimulated PP in surface waters of coastal, estuarine, and shelf waters but suppressed it in the South China Sea basin. Such SA-induced changes in PP were significantly related to in situ pH and solar radiation in surface seawater but negatively related to salinity changes. Our results indicate that phytoplankton cells are more vulnerable to a pH drop in oligotrophic waters. Contrasting responses of phytoplankton productivity in different areas suggest that SA impacts on marine primary productivity are region-dependent and regulated by local environments.

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Cite this as

Gao, Guang, Wang, Tifeng, Sun, J, Zhao, X, Wang, Lifang, Guo, Xianghui, Gao, Kunshan (2022). Dataset: Seawater carbonate chemistry and phytoplankton productivity between coastal and offshore surface waters in the Taiwan Strait and the South China Sea. https://doi.org/10.1594/PANGAEA.953365

DOI retrieved: 2022

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-4.0
Source https://doi.org/10.1594/PANGAEA.953365
Author Gao, Guang
Given Name Guang
Family Name Gao
More Authors
Wang, Tifeng
Sun, J
Zhao, X
Wang, Lifang
Guo, Xianghui
Gao, Kunshan
Source Creation 2022
Publication Year 2022
Resource Type text/tab-separated-values - filename: Gao-etal_2022_BG
Subject Areas
Name: Chemistry

Name: Ecology

Name: Lithosphere

Related Identifiers
Title: Contrasting responses of phytoplankton productivity between coastal and offshore surface waters in the Taiwan Strait and the South China Sea to short-term seawater acidification
Identifier: https://doi.org/10.5194/bg-19-2795-2022
Type: DOI
Relation: References
Year: 2022
Source: Biogeosciences
Authors: Gao Guang , Wang Tifeng , Sun J , Zhao X , Wang Lifang , Guo Xianghui , Gao Kunshan , Gattuso Jean-Pierre , Epitalon Jean-Marie , Lavigne Héloïse , Orr James .

Title: seacarb: seawater carbonate chemistry with R. R package version 3.2.16
Identifier: https://cran.r-project.org/web/packages/seacarb/index.html
Type: DOI
Relation: References
Year: 2021
Authors: Gao Guang , Wang Tifeng , Sun J , Zhao X , Wang Lifang , Guo Xianghui , Gao Kunshan , Gattuso Jean-Pierre , Epitalon Jean-Marie , Lavigne Héloïse , Orr James .